Power expansion accessory



FIG. 1 is a top right front perspective view of a power expansion accessory showing a first embodiment of our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top right front perspective view thereof, shown in an environment of use;

FIG. 9 is a top right front perspective view of a power expansion accessory showing a second embodiment of our new design;

FIG. 10 is a front elevation view thereof;

FIG. 11 is a rear elevation view thereof;

FIG. 12 is a left side elevation view thereof;

FIG. 13 is a right side elevation view thereof;

FIG. 14 is a top plan view thereof;

FIG. 15 is a bottom plan view thereof; and,

FIG. 16 is top right front perspective view thereof, shown in an environment of use.

The broken lines shown in the figures depict portions of the power expansion accessory and environmental subject matter that form no part of the claimed design. 

CLAIM The ornamental design for a power expansion accessory, as shown and described. 